package com.steerinfo.dil.util;

import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.ParseException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

public class HTTPRequestUtils {
    /**
     * 发送post请求
     * @param url  路径
     * @param json  参数(json类型)
     * @param encoding 编码格式
     * @return
     * @throws ParseException
     * @throws IOException
     */
    public static String send(String url, String json, String encoding) throws ParseException, IOException {
        String body = "";

        //创建httpclient对象
        CloseableHttpClient client = HttpClients.createDefault();
        //创建post方式请求对象
        HttpPost httpPost = new HttpPost(url);

        //装填参数
        StringEntity s = new StringEntity(json.toString(), "utf-8");
        s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,"application/json"));
        //设置参数到请求对象中
        httpPost.setEntity(s);
        System.out.println("请求地址：" + url);
        System.out.println(json);
        httpPost.setHeader("Content-type", "application/json");
        httpPost.setHeader("-UserAgent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

        //执行请求操作，并拿到结果（同步阻塞）
        CloseableHttpResponse response = client.execute(httpPost);
        System.out.println(response);
        //获取结果实体
        HttpEntity entity = response.getEntity();
        System.out.println(entity);
        if (entity != null) {
            //按指定编码转换结果实体为String类型
            body = EntityUtils.toString(entity, encoding);
        }
        EntityUtils.consume(entity);
        //释放链接
        response.close();
        return body;
    }


    public static String getJsonData(JSONObject jsonParam,String urls) {
        StringBuffer sb=new StringBuffer();
        try {
            // 创建url资源
            URL url = new URL(urls);
            // 建立http连接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            // 设置允许输出
            conn.setDoOutput(true);
            // 设置允许输入
            conn.setDoInput(true);
            // 设置不用缓存
            conn.setUseCaches(false);
            // 设置传递方式
            conn.setRequestMethod("POST");
            // 设置维持长连接
            conn.setRequestProperty("Connection", "Keep-Alive");
            // 设置文件字符集:
            conn.setRequestProperty("Charset", "UTF-8");
            // 转换为字节数组
            byte[] data = (jsonParam.toString()).getBytes();
            // 设置文件长度
            conn.setRequestProperty("Content-Length", String.valueOf(data.length));
            // 设置文件类型:
            conn.setRequestProperty("contentType", "application/json");
            // 开始连接请求
            conn.connect();
            OutputStream out = new DataOutputStream(conn.getOutputStream()) ;
            // 写入请求的字符串
            out.write((jsonParam.toString()).getBytes());
            out.flush();
            out.close();
            System.out.println(conn.getResponseCode());

            // 请求返回的状态
            if (HttpURLConnection.HTTP_OK == conn.getResponseCode()){
                System.out.println("连接成功");
                // 请求返回的数据
                InputStream in1 = conn.getInputStream();
                try {
                    String readLine = new String();
                    BufferedReader responseReader=new BufferedReader(new InputStreamReader(in1,"UTF-8"));
                    while((readLine=responseReader.readLine())!=null){
                        sb.append(readLine).append("\n");
                    }
                    responseReader.close();
                    System.out.println(sb.toString());

                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            } else {
                System.out.println("error++");
            }
        } catch (Exception e) {

        }
        return sb.toString();

    }


}
